Year	Percent
1999-01-01	0.5828970000000000
2000-01-01	0.3006330000000000
2001-01-01	1.4463900000000000
2002-01-01	2.5697799999999997
2003-01-01	2.5917200000000000
2004-01-01	5.7012300000000010
2005-01-01	22.2992000000000000
2006-01-01	29.2919999999999980
2007-01-01	27.4495000000000000
2008-01-01	0.5876610000000000
2009-01-01	3.8321400000000003
2010-01-01	3.5153900000000000
2011-01-01	3.1701799999999998
2012-01-01	3.2633799999999997
2013-01-01	3.8165100000000000
2014-01-01	3.4897300000000000
2015-01-01	4.2538900000000000
2016-01-01	4.0037600000000000